40406222 has 8 divisors (see below), whose sum is σ = 62699400. Its totient is φ = 19506424.

The previous prime is 40406167. The next prime is 40406273. The reversal of 40406222 is 22260404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 40406194 and 40406203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348272 + ... + 348387.

It is an arithmetic number, because the mean of its divisors is an integer number (7837425).

Almost surely, 2^40406222 is an apocalyptic number.

40406222 is a deficient number, since it is larger than the sum of its proper divisors (22293178).

40406222 is a wasteful number, since it uses less digits than its factorization.

40406222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696690.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40406222 is about 6356.5888651068. The cubic root of 40406222 is about 343.1490086308.

Adding to 40406222 its reverse (22260404), we get a palindrome (62666626).

The spelling of 40406222 in words is "forty million, four hundred six thousand, two hundred twenty-two".